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(No Model.)

0. L. BLISS. BURNER GAP FOR GAS 0R VAPOR ST OVES. No. 537,886.

Patented Apr. 23, 1895.

NlTED STATES ATENT CARL L. BLISS, OF KANSAS CITY, MISSOURI, ASSIGNOR OFON E-HALF TO CHARLES H. KIRSHNER, OF SAME PLACE.

BURNER-CAP FORGAS OR VAPOR STOl/ES.

SPECIFICATION forming part of Letters Patent No. 537,886, dated April23, 1895. Application filed November 12, 1894. Serial No. 528,596. (Nmodel.)

To 00% whom it may concern.-

Be it known that I, CARL L. BLISS, of Kansas City, Jackson county,Missouri, have invented certain new and useful Improvements inBurner-Gaps for Gas or Vapor Stoves, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, forming a part hereof.

My invention relates to gas and vapor stoves, and more particularly tothe burnercaps therefor.

The construction of ordinary caps for gasoline or vapor stoves isobjectionable, in that the blaze at times flares up and around thecooking utensils, and makes the handles and spouts thereof too hot tohandle,sometimes melting them off. At the same time a large percentageof heat is wasted; also, every current of air from an open door orwindow blows the flame from under the cooking utensil, and thereforewastes the heat and endangers the attendant or cook. Sometimes the flameis extinguished by such air-currents. Another objection is that theradial fingers of the burner-cap which serve as a support for thecooking utensil, project above the plane of the upper surface of thestove, and

therefore afford a flat supporting-surface for only a small part of thebase of the cooking utensil to rest upon, which therefore is not a veryfirm and secure foundation.

The object of my invention is toobviate.

these various objections by the provision of a burner-cap whereby theflame will be inclosed and therefore protected from currents of airpassing through the room so that a person will not be endangered by theflame from the burner, and the full power of the flame will beconcentrated upon the bottom of the cooking utensil upon the'stove.

A further object is to so construct the cap that a detachable lid mayrest upon the cap with its upper surface in the plane of the uppersurface of the arms which support the burner-cap in operative position.

With these objects in view, my invention consists in certain peculiarand novel features of construction and combinations of parts, as

will be hereinafter described and claimed.

In order that the invention may be fully understood, I will proceed todescribe it with reference to the accompanying drawings, in which 7Figure 1 represents a plan vieW,-partly broken away,'of a burner-cap andlid em- J secured to the upper side of said annulus and projectingbeyond the outer margin thereof, to rest upon the top-plate of'the stoveand support the burner-cap in position in the ordinary manner. Thesearms terminate asuitable distance from the inner margin of said annulus,which margin is corrugated to form the depressed surfaces 4, whichtherefore lie below the plane of the upper surface of the annulus 1.Arranged concentric to each other and to the annulus 1, are the pendentflanges or rings, 5, and 6, the former being secured'at its upper end tothe under side of the annulus 1,

outward of the apertures 2, and the latter being secured at its upperend to the under side of the annulus l inward of said apertures. Saidflange 6 extends downward only about half the distance the flange 5extends, and the said flange 6, at its upper margin, is perforated asshown at 6", and it may be found, in order to obtain better results, toprovide it with other apertures a suitable distance below the aperturesin its upper margin, as illustrated. All of these apertures aredesignated by the reference numeral 6. Projecting radially inward fromthe flange or ring 6,for a suitable distance, and cast integral with orsecured to the annulus 1, and having theirupper sur- 5 per margin to theinner margin of the flange 5, and project downwardly and inwardly IOUtherefrom to a point a suitable distance below and inward of,preferably, the flange 6, to embrace snugly and externally thebody-portion of the burner 9 at its upper margin, or at a point belowthe perforations in the burner.

The head of the burner projects upwardly to within a suitable distanceofthe lower margin of the flange or ring 6.

From the above description, it will be apparent that air to supportcombustion may pass freely through said foraminous annulus 8, and thatthe flame is deflected upwardly thereby and is confined within the spacesurrounded by said annulus, so that it will be impossible forair-currents passing through the room to have any effect on the flame.It is not my intention, however, to confine myself in this connection tothe employment of said foraminous annulus, as equal protection fromair-currents passing through the room can be had by projecting theflange 5 down a sufficient distance.

Referring again to the structural features, 10 designates a circular lidprovided with apertures or perforations 11, which is of sizeto fitsnugly between the inner ends of the arms 3, and which rests upon thecorrugated margin or portion of the annulus 1. Weighty or weightedvessels placed upon said lid will cause the same to bend or yieldslightly, that the arms 7 may assist in affording direct support to thesaid vessel. In order to provide openings or passages through which theheat may pass, the under side of said lid is provided at intervals withthe grooves or channels 12, which grooves or channels are wider thanthat portion of the corrugated surface of the annulus lying in the planeof the upper surface thereof, so that said lid, when placed in position,need not be rotatably adjusted to cause the grooves or channels 12therein to register with the depressions 4. When these grooves orchannels and depressed surfaces register, as shown in the drawings,particularly Fig. 5, it will be apparent that the hot air has almost anunobstructed flow between the burner-cap and the said lid. When saidgrooves or channels and depressed surfaces do not register, it will beapparent, also, owing to the width of the grooves or channels 12, beinggreater than that of the portions of the annulus 1 between thedepressions 4, that hot air may still escape between the burner-cap andthe lid, but not so freely as before, and that no matter what positionthe lid occupies upon the burner between the arms 3, air-apertures willbe provided.

In operation, it will be apparent, as above explained, that combustionat the burner is supported by air passing up between the burner and theflange 5, and when the annulus 8 is used, through said annulus. Theflame is protected, as also above stated, from air-currents through theroom, and is thus confined Within its proper sphere, under the fingersof the cap. The apertures or perforations in the flange 6 and in theannulus 1, al-

low the escape of suifieient hot air to produce a draft without allowingany of the flame to escape. I provide two series of apertures 6, becauseif one set only were used the flame, rising to said apertures, mightprevent the escape of sufficient hot air to properly support combustion.\Vith two series of apertures, however, the position of the flame willconstantly vary, because immediately the draft seeks to escape throughone series of apertures the flame will follow, and this action of theflame causes the air to pass through the other series of apertures, andso on. The perforations in the lid allow the heat to come immediately incontact with the cooking utensil, and at the same time aids inconcentrating the flame, while the passages between said lid and theburner-cap form a part of the draft or outlet for the hot air, and areso situated that they cannot be closed, no matter how large the cookingutensil may be.

From the above description, it will be apparent that l have produced aburner-cap for gasoline or vapor stoves which will permit of their useupon porches and other exposed. places without endangering the life ofthe person in charge, and Without endangering the utensils upon thestove, and without wasting the'heat. v A

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- 1. A burner-cap for gasoline or vaporstoves, comprising a perforated or apertured annulus, an annular flangedepending from said annulus outward of the apertures therein, and aperforated annular flange depending from said annulus inward of saidapertures, substantially as set forth.

2. A burner-cap, comprising an apertured annulus supported within anopening in the stove and above the burner, a flange depending from saidannulus outward of said apertures a perforated flange depending fromsaid annulus inward of said apertures, and supporting fingers projecting.radially inward from said perforated flange and having their uppersurface in the plane of the lower surface of said annulus, substantiallyas set forth.

3. A burner-cap, comprising an apertured annulus above and surroundingthe burner of the stove, a flange depending from said annulus outward ofsaid apertures, a flange depending from said annulus inward ofsaidapertures, and a foraminous annulus secured at its upper end to thefirst-mentioned flange and projecting at its lower end below thelastmentioned flange and embracing the burner, substantially as setforth.

4:. A burner-cap, comprising an apertured annulus, having its innermargin corrugated,

arms projecting above and outward of the same, a flange depending fromsaid annulus outward of said apertures, a perforated flange dependingfrom said'annulus inward of said apertures, supporting fingersprojecting radially inward from said flange, and a lid hav- IIO inggrooves at its outer margin and in its unthe same; said cap havingmarginal grooves der side which register with the depressions in itsunder side, substantially as and for the of the corrugated portion ofthe said annulus, purpose set forth.

and form in conjunction therewith air-pas- In testimony whereof I affixmy signature 5' sages, substantially as set forth. in the presence oftwo witnesses.

5. In a burnercap an annulus having its inner margin corrug ated to formdepressed CARL BLISS surfaces, and a cap bridging the space in-Witnesses: closed or surrounded by said annulus and G. Y. THORPE,

[O resting upon the said corrugated margin of M. R. REMLEY;

